Agilent 5991-3723EN High-Speed Broadband Spectroscopy Measurements Advance Molecular Research - Application free download

File name 5991-3723EN High-Speed Broadband Spectroscopy Measurements Advance Molecular Research - Application

Keysight Technologies High-Speed Broadband Spectroscopy Measurements Advance Molecular Research Application Note Introduction Rotational spectroscopy has allowed the identification of hundreds of complex molecules and has enabled scientists to better understand the laws of the universe including the origins of life on Earth. The rotational spectra of small molecules can be analyzed by optical methods in the infrared spectrum, however, the rotational transitions offer better resolution in mixtures and better specificity to molecular geometry. The Keysight Technologies, Inc. next generation data conversion technologies have enabled the development of a new technique called segmented chirped pulse Fourier transform millimeter (CP-FTmmW) spectroscopy capable of extending spectroscopic measurements to other wavebands (millimeter/sub-millimeter and terahertz) to provide the precise rotational fingerprint of molecules. Abstract Spectroscopy measures the interaction between a sample and electromagnetic radiation (light). Light can be emitted (emission spectroscopy), absorbed (absorption spectroscopy) or scattered by a sample. Molecular spectroscopy can be used to determine the composition of a substance since a molecule's dynamics are uniquely affected by specific frequencies of light. Molecular Rotational Resonance (MRR) spectroscopy, a form of molecular spectroscopy, enables the accurate identification of the molecular structure of gas phase molecules based on the change of angular momentum when interacting with the light field. Recent improvements in electronic instrumentation have enabled the development of a chirped pulse Fourier transform millimeter-wave (CP-FTmmW) spectrometer capable of measuring the 260